4. monrad cn migration towards epc-v5 2

7/30/2019 4. Monrad CN Migration Towards EPC-V5 2

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THE Mobi le Broadband Standard

3GPP 2011 3GPP Seminar, Moscow, 24 May 2011 1

Co r e N e t w o r k m i gr a t i o n t o w a r d s t h e

Ev o l v e d Pa ck e t Co r e ,

st a t u s a n d f u t u r e 3 G PP w o r k

Mr Atle MonradChairman of 3GPP TSG CT
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Outl ine

3GPP Cor e Net w ork, Rel-8 Rel-10

Net w ork opt im ised for IP tr aff ic

Voice over b ot h CS and PS

Fut ure plans, Rel-11 and b eyon d
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EPS archit ecture

hPCRF

HSS

SWn

Operator's IPServices

(e.g. IMS, PSSetc.)

TrustedNon-3GPP IP

Access SWa

HPLMN

SWd

Non-3GPPNetworks

VPLMN

vPCRF

ePDG

SWm

UntrustedNon-3GPP IP

Access STa

3GPP AAAServer

S2c

S2c

S9

SGi

Gx

Rx

S6b

UE

3GPP AAAProxy

SWx

Gxa

Gxb

Gxc

S8

S6a

S2c

3GPPAccess

ServingGateway

PDNGateway

M any 3GPP access techn olo giesM obi l i ty bet w een access technologies

M ul t ip le roaming m odelsNon-3GPP accesses

LTE

WIMAX

GSM1900

EDGE

GSM1800

GSM450

GSM900

UTRAN

UTRAN

HSPA

UTRAN

HSPA+

LTE

HRPD

1xRTT 802.16

LTE

LTE1800

LTE2600

WLAN3GPP2

GERAN

UTRAN
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EPS Cor e Net w ork key-poin t s

Flat Packet Sw itch (PS) only architectur e, t w o n etw or k no desfor cont ro l p lane

Security m echanism s t o facil i tat e various t raffic cases

GTP and PM IP roam ing int er faces (S5/ S8)

Opt im ised int erw orking wit h legacy cellular syst em sVarious ways t o com bine or spl i t t raff ic of f at various points

Advanced po licy-funct ions in net w or k as w ell as in ter m inals

Int erw or king w ith no n-3GPP access technologies

Facil it ate m ob ile as w ell as fixed net w orks


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Netw ork opt im ised forIP t raff ic

Dual-st ack IPv4/ 6 connectivit y

Term inals as w ell as net w or k can inf luence the QoS

Oper ato rs can inf luen ce t he select ion of access by ANDSF

Various ways t o com bine or spl i t t raff ic of f at various points

Local IP Access (LIPA)

Select ive IP Traf fic Of f load ing (SIPTO)

W LAN of f loading

M ult iple PDN Conn ections t o Sam e APN (M UPSAP)

CS t raff ic is st il l sup po rt ed ...


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3GPP 2011 3GPP Seminar, Moscow, 24 May 2011

Scope of Local IP access

Logical connection for mobile operator IP traffic

6

Local IP Access (LIPA)

R e s i d e n t i a l /R e s i d e n t i a l /

e n t e r p r i s ee n t e r p r i s e

I P N e t w o r kI P N e t w o r k

Local IP traffic

IP traffic to mobile operators CN

All traffic

on 3GPPradio

UE

M obile operatorM obile operator ss

corecore

ne tworkne twork

LIPA is prim arily for end u sers benefit , to allow access to localresident ial or corporate ne tw ork t hrough a 3GPP device

LIPA service does not need to be t ransparent , but t he enduser m ay have to select LIPA access

LIPA pro vides access fo r IP capable UEs that are conn ected via

a H(e)NB sub system (i.e. using H(e)NB radio access) to o t her IP

capable entit ies in th e same residential/ ent erprise IP netw ork.

Simu ltaneous access from a UE to the m obile o perator s core

netw ork and Local IP Access to a resident ial/en terpr ise IPnetwo rk wi l l be suppor ted.

A UE m ust have a valid subscript ion w ith t he mo bile operator

in o rde r t o u se Local IP Access.A UE m ust be able t o use Local IP Access in a visited net w ork

subject to roaming agreement betw een mo bi le operators.

Pre-Rel 10 UEs sho ul d be a ble t o u se Local IP Access.


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Select ive IP Traf fic Off loadin g(SIPTO)

S5

RANL-PGW

UE

eNB

CN

P-GWS-GW

CN Traffic

MME

S1-U

S11S5

SIPTO TrafficAll traffic

on 3GPPradio

Optimising cost per b i t is becom ing essent ia l in the f lat rat e eraSIPTO is a specific ro ut ing scenario w ith in th e oper ato rs netw ork, allow ing s e l e c t i v eoff lo ading of t he tr aff ic away fro m the Evolved Packet Core net w ork

SIPTO benefi t s the cel lular op erator and i t is transparent for th e end user

SIPTO is intended for al low ing cost op tim ized h andl ing of t he int ernet tr aff ic that is not

intended for t he operator s core netw ork

Local GW is selected for th e tr aff ic to b e off loaded


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W LAN Off loading

W LAN off loading refers to th e dual radio scenario wh ere part of th e traff ic is rout ed viaW LAN access and par t v ia 3GPP access

The 3GPP Evolved Packet Cor e net w or k (EPC) as th e com m on core net w ork serves bot h3GPP rad io access t echn olo gies and no n-3GPP rad io access t echn o logies

W LAN off loading covers both th e scenario w here t he t raff ic via W LAN radio is anchored

in th e EPC (i.e., seamless off loading) and t he scenario w here it is no t ancho red (i.e., no n-

seamless offlo ading)Access Net w ork Discovery and Selection Functio n (ANDSF) is t her e to pro vide t he UEw ith th e access netw ork discovery inform ation and t he pol icy on how to u se theavailable access netw orks

Available access netw orks

Preferr ed rou ting of t he traff ic per APN, per IP flow

WLAN 3GPPRAT

EPCANDSF

UE

HA


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Voice over bot h CS and PS -t he LTE voice so lut ion

CS and PS vo ice service capabili t ies

CS and PS vo ice service archit ecture

M ult im edia te lephony (M M TEL)

CS FallBack (CSFB)Single Rad io Voice Call Cont inu it y (SRVCC)

Em ergency calls in LTE


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CS and PS vo iceservice archit ect ur e

HSS/HLR

E-UTRANUE

INTERNET

MAP

MAP

MSC Server SMSC

PCRFGERAN/UTRAN

SGSN

MME

Backbone (GRX, IPX)

S-/PDN-GW

P-CSCFOperator SIP based VoIP

machinery (IMS)

S-CSCF


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CS Fal lback (CSFB)

App licat ion of CSFB:

CS capable device camp ing on LTE cell can estab lish/ re ceive CS services

Reuse of existing CS infr astr uctu re f or voice service un ti l IM S VoIP is deplo yed

Provide voice roaming support w ith LTE Can supp ort em ergency calls using existin g CS infr astr uctu re

CSFB reuses voice serv ices pr ov ided b y legacy CS in fr astr uct ur e

EPS redir ect s t he UE t o CS Dom ain f or CS services

SM S can b e del ivered t o t he UE with out redirecting to CS Dom ain

Aft er CS service th e UE ret urn s to LTE, depend ing on coverage and p olicy

User can decid e, based o n CLI, w het her t o accept CSFB requ est


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Single Radio Voice Call Cont inu it y(SRVCC)

SRVCC use case: IM S call initiat ed in LTE can con t inue in CS dom ain after m oving ou tside of

LTE coverage ar ea

SR-VCC is invo ked if no ot he r Vo IP capab le PS syst em (HSPA/ eHRPD) isavailab le f or Vo IP PS-PS HO

Requir es over lapping w ith 1 xRTT/ GSM / W CDM A coverage

SRVCC im pr ovem ent s: M id-call services (like HOLD & M PTY)

em ergency calls

video calls


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Fut ur e plans, Rel-11 and beyondth ought s & opport uni t ies

13

M ult iple accesses

M ult iple t echno logies

Netw ork sharing

Nat ional roam ing

Deploym ent scenario aspect s


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Deploym ent scenario aspects

LTE can co-exist alongside ot her t echnologies in m ult iple conf iguration s Evolution ary approach to upgrade of netw orks and migration fro m 2G/ 3G

networks

LTE overlapping w ith 2G/ 3G, dat a only Saturation of f ixed int ernet subscript ions and grow th of m obi le subscript io ns

requires faster m obi le connections Decl ine of f ixed subscribers and grow th of m obi le intern et subscribers

LTE w ith speech and m ult im edia supp ort Voice and M ult im edia solut ion for LTE is IM S Rel-9 sup por ts fu ll speech call service in IM S GSM A has published a global solut ion f or VoLTE Regulator y em ergency call and pu blic war ning syst em PW S sup po rt Com prehensive set of supplem entary services over IM S

Re-farm ing of 2 G/ 3G legacy freq uen cies for LTE use Requir es voice call cont inu ity bet w een 2G/ 3G and LTE in bot h direct ions

Fem t o-cells imp lem ent ed in 3GPP via Hom e Cells (NodeB and eNo deB)


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Thank You

www.3gpp.org

M o r eInformationabout 3GPP:

[email protected]

Atle Monrad3GPP TSG CT chairman

+47 454 10 665

[email protected]
http://www.3gpp.org/mailto:[email protected]:[email protected]://www.abbyy.com/buyhttp://www.abbyy.com/buymailto:[email protected]:[email protected]://www.3gpp.org/

4. monrad cn migration towards epc-v5 2

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